The former New England Patriots player had levels of brain damage usually seen in a 46-year-old when he was just 27.

Author:
TEGNA

Published:
10:04 PM EST November 9, 2017

Researchers at Boston University said that Aaron Hernandez had damage to his brain that's usually found in a person who was at least 46 years old.

Hernandez, the former New England Patriots tight end who was 27 when he hanged himself in a Massachusetts jail while serving a life term for murder, suffered from chronic traumatic encephalopathy (CTE) and had severe damage to parts of the brain that play an important role in memory, impulse control and behavior.

While the CTE findings originally were made public in September, more details of the study were revealed at a medical conference in Boston on Thursday.

Ann McKee, director of the CTE Center at Boston University, has studied hundreds of brains from football players and other athletes who donated them after their deaths. She said that Hernandez's brain was “one of the most significant contributions to our work” because they were able to study the disease in someone his age, according to a report from the Washington Post.

“In any individual we can’t take the pathology and explain the behavior,” McKee said. “But we can say collectively, in our collective experience, individuals with CTE – and CTE of this severity – have difficulty with impulse control, decision-making, inhibition of impulses or aggression, often emotional volatility and rage behaviors."

In September, McKee and Boston University released a report that said in part: "Based on characteristic neuropathological findings ... Mr. Hernandez had chronic traumatic encephalopathy (CTE), Stage 3 out of 4, (Stage 4 being the most severe). This diagnosis was confirmed by a second VABHS neuropathologist. In addition, Mr. Hernandez had early brain atrophy and large perforations in the septum pellucidum, a central membrane."